AAA Oklahoma says the average price for a gallon of regular gasoline was $2.07 Tuesday. Gas prices have tumbled $1.46 since hitting its 2014 high of $3.53 on June 26.

AAA says the state pump price has fallen for 55 straight days, plummeting 20 cents in the last week and 56 cents over the last month.

Some stations in Oklahoma City were selling gasoline for under $1.70 on Tuesday — the lowest prices anywhere in the nation. And the Tulsa metropolitan area had the lowest citywide average price of any major U.S. city Tuesday at $1.93 per gallon.

Problematic executions in Oklahoma, Arizona and other states have highlighted a patchwork approach states are taking with lethal drugs, with types, combinations and dosages varying widely.

Arizona announced Monday that it was switching from the two-drug method that led to a nearly two-hour execution earlier this year, while a federal judge in Oklahoma upheld the state's three-drug lethal injection protocol, which was adjusted recently after a botched execution in the spring.

How did the disparities in drugs come about after more than three decades in which all death penalty states used the exact same mixture?

Bacone College in Muskogee County; the Kennedy Mansion in Okmulgee; the Oklahoma A&M College Dairy Barn in Stillwater; the Fox Hotel in Skiatook; the Town House Hotel in Oklahoma City; and a rural separate school in Cleveland County have been added to the National Register of Historic Places.

A federal judge in Oklahoma City ruled Monday the state’s lethal injection methods are constitutional following the execution of a man that went awry in April.

U.S. District Judge Stephen Friot said state’s lethal injection cocktail “does not carry substantial likelihood of inflicting pain,” despite current death row inmates’ claim the practice is cruel and unusual punishment.

Lawyers for Boston Marathon bombing suspect Dzhokhar Tsarnaev are again drawing parallels between the media coverage of their client's case to the coverage received by Oklahoma City bomber Timothy McVeigh in an effort to have the trial moved out of Massachusetts.

In a filing Monday, defense attorneys wrote that because "the crimes charged inflicted actual injury on the entire local population" and "greater Boston, was itself, a victim," the case is similar to the McVeigh case.

An Oklahoma newspaper has filed a lawsuit against the state seeking the release of records related to the troubled execution of Clayton Lockett.

The Tulsa World reported Monday that the lawsuit was filed by Reporters Committee for Freedom of the Press on behalf of BH Media Group, Inc., which owns the World, and Enterprise Editor Ziva Branstetter.

Oklahoma officials have selected a Kansas-based construction company with experience renovating historic structures to repair the exterior of the state Capitol.

Officials with the state's Office of Management and Enterprise Services announced Monday the selection of JE Dunn Construction to begin the first phase of a planned $120 million renovation of the nearly 100-year-old building.

The maximum value of the contract to repair the building's exterior is $25 million.